Additional steps to get sqlite3 installed on ubuntu

I came across a cryptic error message while trying to get the sample booking app running because I was missing the sqllite3 dev libraries in ubuntu. This might be obvious for devs familiar with sqlite3, but my background is mysql and mongo. 

Excerpt of the error below;

    go get github.com/mattn/go-sqlite3
    # pkg-config --cflags sqlite3
    Package sqlite3 was not found in the pkg-config search path.
    Perhaps you should add the directory containing `sqlite3.pc'
    to the PKG_CONFIG_PATH environment variable
    No package 'sqlite3' found
    exit status 1